检索结果-南通市图书馆

Trusted Attestation Architecture on an Infrastructure-as-a-Service

在线全文

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2017年第5期22卷 469-477页

作者： Xin jin Xingshu Chen Cheng zhao Dandan zhao the College of Computer Science Sichuan University

Trusted attestation is the main obstruction preventing large-scale promotion of cloud computing. How to extend a trusted relationship from a single physical node to an Infrastructure-as-a-Service （laaS） platform is a problem that must be solved. The laaS platform provides the Virtual Machine （VM）, and the Trusted VM, equipped with a virtual Trusted Platform Module （vTPM）, is the foundation of the trusted laaS platform. We propose a multi-dimensional trusted attestation architecture that can collect and verify trusted attestation information from the computing nodes, and manage the information centrally on a cloud management platform. The architecture verifies the laaS＇s trusted attestation by apprising the VM, Hypervisor, and host Operating System＇s （OS） trusted status. The theory and the technology roadmap were introduced, and the key technologies were analyzed. The key technologies include dynamic measurement of the Hypervisor at the process level, the protection of vTPM instances, the reinforcement of Hypervisor security, and the verification of the laaS trusted attestation. A prototype was deployed to verify the feasibility of the system. The advantages of the prototype system were compared with the Open CIT （Intel Cloud attestation solution）. A performance analysis experiment was performed on computing nodes and the results show that the performance loss is within an acceptable range.

关键词： dynamic measurement trusted cloud vTPM trusted attestation

Electrochemical Behavior of CoSb_3-based Electrodes Using Binary PAni/PVDF Binder

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2007年第1期23卷 142-144页

作者： Jian xie Xinbing zhao Gaoshao CAO Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China

The polyaniline （PAni）/polyvinylidene fluoride （PVDF） hybrid was served as a novel binder for CoSb3-based alloy electrode. The effect of PAni content on the electrochemical performances of the alloy electrode was investigated. It was found that the CoSb3 electrode using the binary PAni/PVDF binder exhibits higher reversible capacity than that using the single PVDF binder, especially in the initial cycles. As a result, the PAni/PVDF hybrid could be a promising binder for the alloy electrode.

关键词： PAni/PVDF binder CoSb3 electrode Electrochemical behavior Lithium ion batteries

超声协同热处理对菜籽蛋白结构及溶解性的影响

在线全文

学校读者我要写书评

暂无评论

食品科学 2025年第1期46卷 100-107页

作者：赵康妤杨萍马俊坤舒文静杨凤谢伊莎刘庆庆西华大学食品与生物工程学院川渝共建特色食品重庆市重点实验室四川成都610039 南昌大学食品学院江西南昌330027

研究超声(200、400、600 W)协同热处理(25、60、90℃)改性对菜籽蛋白结构及溶解性的影响。结果表明:单独热处理时,随着温度的升高,蛋白质发生热聚集,粒径从1188.18 nm增至5630.00 nm,溶解度从8.6%降至5.6%,并伴随Zeta电位绝对值减小,蛋... 详细信息

研究超声(200、400、600 W)协同热处理(25、60、90℃)改性对菜籽蛋白结构及溶解性的影响。结果表明:单独热处理时,随着温度的升高,蛋白质发生热聚集,粒径从1188.18 nm增至5630.00 nm,溶解度从8.6%降至5.6%,并伴随Zeta电位绝对值减小,蛋白构象从有序转变为无序;热处理协同超声处理时,蛋白分子空间结构展开,肽键断裂,疏水性基团暴露,与仅25℃热处理相比,协同超声(600 W)促进蛋白聚集体破裂,粒径降至1155.27 nm,暴露出更多极性基团,带电残基增多,表面疏水性增加,二级结构发生相互转化,蛋白的溶解度得到显著改善(升至57.31%)。本研究结果可为菜籽蛋白复合改性及溶解性相关研究提供科学依据。

关键词：超声波菜籽蛋白协同作用蛋白结构热处理溶解度

APPLICATION OF COAL GOLD AGGLOMERATION PROCESS TO GOLD RECOVERING FROM AMALGAMATION TAILINGS

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1997年第4期7卷 153-156页

作者： zhao, B Lu, LZ xie, HQ Chinese Acad Sci Inst Chem Met Beijing 100080 Peoples R China

ＡＰＰＬＩＣＡＴＩＯＮＯＦＣＯＡＬＧＯＬＤＡＧＧＬＯＭＥＲＡＴＩＯＮＰＲＯＣＥＳＳＴＯＧＯＬＤＲＥＣＯＶＥＲＩＮＧＦＲＯＭＡＭＡＬＧＡＭＡＴＩＯＮＴＡＩＬＩＮＧＳ①ＺｈａｏＢｉｎｇ，ＬｕＬｉｚｈｕ，ＸｉｅＨｕｉｑｉｎ... 详细信息

ＡＰＰＬＩＣＡＴＩＯＮＯＦＣＯＡＬＧＯＬＤＡＧＧＬＯＭＥＲＡＴＩＯＮＰＲＯＣＥＳＳＴＯＧＯＬＤＲＥＣＯＶＥＲＩＮＧＦＲＯＭＡＭＡＬＧＡＭＡＴＩＯＮＴＡＩＬＩＮＧＳ①ＺｈａｏＢｉｎｇ，ＬｕＬｉｚｈｕ，ＸｉｅＨｕｉｑｉｎｇＩｎｓｔｉｔｕｔｅｏｆＣｈｅｍｉ...

关键词： CGA process amalgamation tailings gold recovering

Metal-Oxo Cluster Catalysts for Photocatalytic Water Splitting and Carbon Dioxide Reduction

在线全文

学校读者我要写书评

暂无评论

Transactions of Tianjin University 2022年第3期28卷 214-225页

作者： Qing Lan Sujuan jin Bohan Yang Qiang zhao Chaolei Si Haiquan xie Zhiming Zhang Engineering Technology Research Center of Henan Province for Solar Catalysis College of Chemistry and Pharmaceutical EngineeringNanyang Normal UniversityNanyang 473061China Institute of New Energy Materials and Low Carbon Technology Tianjin University of TechnologyTianjin 300384China

Photocatalytic water splitting and carbon dioxide photoreduction are considered eff ective strategies for alleviating the energy crisis and environmental *** metal-oxo clusters possess excellent electron storage/release ability and unique catalytic properties via intermetallic synergy,which enables them with great potential in environmentally friendly ***,metal-oxo clusters with precise structure can not only act as high-effi ciency catalysts but also provide well-defi ned structural models for exploring structure-activity *** this review,we systematically sum-marize recent progress in the catalytic application of polynuclear metal-oxo clusters,including polyoxometalate clusters,low-cost transition metal clusters,and metal-oxo-cluster-based metal-organic frameworks for water splitting and CO_(2)***,we discuss the challenges and solutions to the problems of polynuclear metal-oxo clusters in photocatalysis.

关键词： Water splitting Carbon dioxide photoreduction Photocatalysis Polynuclear metal-oxo clusters Polyoxomatalate

A Note on Calculation of Threshold Resonance by the Method of Complex Scaling

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1996年第4期13卷 241-244页

作者： zhao Mei-shan xie Xi-shun The Janies Franck Institute The University of ChicagoChicagoIllinois 60637USA Department of Physics University of MinnesotaMinneapolisMinnesota 55455USA Department of Physics Southeastern UniversityNanjing210096

A new approach to threshold resonance calculation by the complex scaling method is *** to scattering over a model potential barrier is presented and compared to a direct quantum scattering calculation.

关键词： calculation. scaling quantum

State Feedback Stabilization of Stochastic Feedforward Nonlinear Systems with Input Time-delay

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

自动化学报 2014年第12期40卷 2972-2976页

作者： xie Xue-Jun zhao Cong-Ran Institute of Automation Qufu Normal University

In this paper, the problem of state feedback stabilization for stochastic feedforward nonlinear systems with input time-delay is considered for the first time. By introducing a variable transformation, skillfully combining the homogeneous domination method, and constructing an appropriate LyapunovKrasovskii functional, a state feedback controller is developed to guarantee the closed-loop system globally asymptotically stable in probability.

关键词：状态反馈镇定非线性系统时间延迟输入前馈随机状态反馈控制器变量变换

A New SLM Scheme Based on Constellation Rotation for PAPR Reduction

在线全文

学校读者我要写书评

暂无评论

China Communications 2024年第11期21卷 267-277页

作者： xie Yinghai Li Xianhuai zhao Haibo Zhuhai Zhonghui Microelectronics CO. LTD.ZhuhaiGuangdong 519080China Willfar Information Technology CO. LTD.ChangshaHunan 410205China

A new selected mapping(SLM)scheme based on constellation rotation is proposed to reduce the peak-to-average power ratio(PAPR)of orthogonal frequency division multiplexing(OFDM)*** core idea is to generate abundant candidate signals by rotating different sub-signals of the original frequency signal with different *** new signal generation method can simplify the calculation process of candidate time signals into the linear addition of some intermediate signals,which are generated by the inverse fast Fourier transform(IFFT)operation of the original frequency *** feature can effectively reduce the computational complexity of candidate signal generation *** compared to the traditional SLM scheme,the number of complex multiplication and complex addition of new scheme can separately be decreased by about 99.99% and 91.7% with some specific ***,with the help of the constellation detection mechanism at the receiver,there is no need to carry any side information at the *** simulation results show that,with the same channel transmission performance,the PAPR reduction performance of new scheme can approach or even exceed the upper bound of the traditional SLM scheme,which uses all the vectors in Hadamard matrix as the phase sequences.

关键词： constellation rotation low computational complexity new selected mapping scheme peak-toaverage power ratio without side information transmission

Cubic Metric Reduction for Repetitive CAZAC Sequences in Frequency Domain

在线全文

学校读者我要写书评

暂无评论

China Communications 2021年第12期18卷 196-207页

作者： Yajun zhao Juan Liu Saijin xie Beijing Institute of Technology Beijing 100081China ZTE Corporation Beijing 100029China

To meet the requirements of Occupied Channel Bandwidth(OCB)of unlicensed spectrum,in NR-based Access to Unlicensed Spectrum(NR-U)of 5G New Radio(NR)system,the channels of PRACH and PUCCH have to employ some frequency domain sequence repetition *** repeti-tion schemes cause serious Cubic Metric(CM)prob-lems for these channels,although these two types of channels are composed of Constant Amplitude Zero Auto-correlation(CAZAC)*** the properties of CAZAC sequences,which are used for PRACH and PUCCH(refer to PUCCH format 0 and format 1)in 5G NR system,in this paper,we pro-pose some new schemes of CM reduction for these two channels taking into account the design princi-ples to ensure the sequence performance of the auto-correlation and *** the recom-mended CM reduction schemes are evaluated and the optimized parameters are further provided considering both CM performance and the complexity.

关键词： 5G OFDM cubic metric NR-U oc-cupied channel bandwidth CAZAC zadoff-chu se-quence